Patents by Inventor Robert D. Beaman

Robert D. Beaman has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Amusement device formed of a plurality of differently shaped interfitting modular units
    Patent number: 4323245
    Abstract: The present invention relates to an amusement device which is formed of a plurality of differently shaped modular units which can interfit to form a solid equilateral tetrahedron. Each of the modular units is a single solid piece having a shape which is defined by the integral combination of one or more solid equilateral octrahedrons and one or more solid equilateral tetrahedrons. The modular units can also interfit to form random three-dimensional sculptural shapes.
    Type: Grant
    Filed: February 24, 1981
    Date of Patent: April 6, 1982
    Inventor: Robert D. Beaman